General Catalogue Chemistry - BECO Internacional LTDA.

Conductiometric titration
In a neutralization reaction, the conductivity initially decreases, as virtually
undissociated water is formed. Conductivity subsequently increases due to a
surplus of titrant. The point of lowest conductivity corresponds to the equivalence
point of the titration. Precipitation and complexometric titrations
can also be conducted in a similar manner.
Equipment list
Conductiometric titration
Quantity Description Cat. No.
1 Digital conductivity meter . . . . . . . . . . . . . . . . . . . . . . . . . . . 667 439
1 Conductivity measurement cell . . . . . . . . . . . . . . . . . . . . . . 667 426
1 Magnetic stirrer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 666 845
1 Stand rod for Bunsen stand . . . . . . . . . . . . . . . . . . . . . . . . . 666 523
1 Bosshead S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 09
1 Miniature clamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 666 551
1 Burette clamp for one burette . . . . . . . . . . . . . . . . . . . . . . . 666 559
1 Burette, 25 ml. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 665 845
1 Beaker, 250 ml. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 664 103
667 426
Conductivity measurement cell
In plastic holster with cable and plug for connection
to the conductivity box (> 524 037)
Cell constant 1.0 1/cm
666 214
Temperature sensor, Pt 100
For use in connection with instruments
> 667 420 and > 666 450 for temperature
compnsation in connction with > 667 439
and > 666 451. Pt 100 resistent element,
with connection cable and DIN connector.
>
666 222
Data output module
see page 636
Hand-held conductivity meter
For measuring the conductivity (conductance)
of solutions and Temperatures.
Detailed description see page 5.
666 212
Temperature sensor
NTC resistance element for more precise. measurement.
With coiled cord (1.5 m) and DIN plug.
Measurement range: - 20 to + 120 °C
Tolerances:
- 20 to + 70 °C: 0.2 K
+ 70 to + 120 °C: 0.4 K
Diameter: 3 mm
Overall length: 280 mm
667 4101
Watercheck pH and conductivity tester
Combination meter for pH and conductivity.
With single-point calibration and automatic
temperature compensation for conductivity,
rapid response time.
Measuring range:
0.0 to 14.0 pH, 0 to 1999 µS/cm
Resolution: 0.1 pH, 10 µS/cm
Accuracy (20 °C): ± 0.2 pH/±2 %
Calibration: single-point via trimmer
Temperature compensation:
automatic for conductivity
Ambient conditions: 0 to 50 °C, RH 95 %
Battery (included): 3 x 1.5 V/approx. 290 h
Dimensions: 194 x 29 x 165 mm
Weight: 70 g
667 4101
measuring equipment - conductivity
667 4272
Conductivity tester DiST 3
With integrated temperature sensor for automatic
temperature compensation and manual
calibration option.
Complete with protective cap and batteries.
Measuring range 1999 µS/cm
Resolution: 1 µS/cm
Accuracy (20 °C): ±1 %
Calibration: manual via trimmer
Temperature compensation:
automatic from 5 to 50 °C
Ambient conditions: 0 to 50 °C, RH 95 %,
RH 100% waterproof version
Battery: 4 x 1.5 V/approx. 350 h
Dimensions: 150 x 30 x 24 mm
Weight: 85
667 4271
Conductivity tester DiSTWP 3
Waterproof.
667 4271
LEYBOLD DIDACTIC · GENERAL CATALOGUE CHEMISTRY
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